Neil Patrick Harris's Review of 'Gone Girl' Is Nothing Short of a Rave (VIDEO)

Fans of Gillian Flynn's novel, "Gone Girl," who are unsure of how the book's upcoming big screen adaptation will turn out can breathe easy. Neil Patrick Harris, who stars in the flick, says it's awesome.

In an interview with HuffPost Live's Ricky Camilleri, NPH revealed that director David Fincher recently showed him a rough cut of the completed flick -- not color-corrected yet and with different music for now -- and even in its unfinished state, the actor was quite impressed.

"I really, really loved it," Harris said. "I loved the book, and I thought since [Flynn] did the screenplay as well, it's in most ways true to the book -- mostly in its kind of unsettling nature. You leave feeling just kind of rocked by what 'relationship' can mean."

Fincher's vision for the movie was inspiring, Harris added, noting that the notoriously meticulous director took an active interest in every facet of the film, from the lighting to the sound to camera angles, creating an immersive environment for actors to assume their characters' identities fully and keeping the book's tone intact.

"David Fincher is super good at making things creepy through being so quiet and ponderous and kind of beautiful," the actor said. "I'm just a big fan of him as a director, as an artist. ... He's really skilled at everything, and he sees everything, and he's just kind of a master. So to be a piece of that puzzle ... I'm incredibly humbled and grateful and I'm pinching myself."

Bored small-town girl Charlie (Teresa Wright) is named after her favorite uncle, who comes to town on a rare visit. She's the only family member to spot a disturbing undercurrent as he rants about "faded, fat greedy women" who spend their late husband's wealth. His niece protests, "They're alive, they're human beings," to which he counters, "Are they?" She's already begun to suspect he's the killer of elderly women known as the "Merry Widow Murderer," and soon young Charlie is a target herself. Hitchcock's theme of violence and horror under the façade of normalcy was never more skillfully brought home.